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Each length unit on the speedway diagram represents one-tenth of a mile. What is the area of the sector associated with turn A in units of square miles? Use the value 3.142, and round your answer to four
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Aug 12, 2019
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Each length unit on the speedway diagram represents one-tenth of a mile. What is the area of the sector associated with turn A in units of square miles? Use the value 3.142, and round your answer to four decimal places.
Mathematics
high-school
Francesco Dondi
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Answer:
0.0707
Explanation:
edmentum answer
Lucian Thorr
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Aug 14, 2019
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Lucian Thorr
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we know that
area of a circle=pi*r²
turn A
r=3 units------> 3*(1/10)----> 0.3 miles
area of a circle=3.142*0.3²-----> 0.28278 miles²
by proportion
0.28278/360°=A/90°------> A=90*0.28278/360------> A=0.0707 miles²
the answer is
0.0707 miles²
Jace Rhea
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Aug 17, 2019
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Jace Rhea
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